A wireless communication method and system based on a backscattering antenna array

Abstract

The invention discloses a wireless communication method and system based on a backscattering antenna array. The method comprises attaching backscattering circuit label which is low in consumption, small in size and low in price to the periphery of the AP to construct the multipath propagation characteristic of the wireless signal, extracting representative characteristics of the backscattered signal obtained by reflecting the sending signal through the backscattered circuit label; comparing the similarity among the representative features by adopting a distance search algorithm; contructing propogation feature vector, and finally, classifying the identities of the attackers and the legal wireless equipment based on the similarity of the propagation feature vectors by using a machine learning algorithm without using an expensive antenna array or performing any hardware modification on the existing equipment, so that the hardware cost is low, the operability is high, and the accuracy andthe efficiency of identifying the active attackers by the system are greatly improved.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically, relates to a method and system for wireless communication based on a backscattering antenna array. Background technique [0002] The Internet of things (IoT) has become the third technological innovation in the development of the world's information industry after computers and the Internet because of its powerful wireless communication capabilities and its great advantages in overcoming problems such as cost, energy consumption, and mobility. . With the continuous development of the information age, the diversification of user application requirements, and the use of massive IoT devices have greatly promoted the vigorous development of IoT technology, and also spawned a large number of IoT technologies that meet different needs. [0003] Continuous advancements in low-power wireless communication technologies and lightweight communication protocols are driving the ad...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to provide a wireless communication method and system based on backscatter antenna array, aiming to solve the problems of high hardware cost and low security in the traditional method of preventing wireless devices from being attacked by outsiders

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